mddOperatorStrategy.h

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 *       - Pierre-Henri WUILLEMIN(_at_LIP6)                                 *
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// =========================================================================
#ifndef GUM_MDD_OPERATOR_STRATEGY_H
#define GUM_MDD_OPERATOR_STRATEGY_H
// =========================================================================
#include <agrum/FMDP/planning/IOperatorStrategy.h>
 
// =========================================================================
 
namespace gum {

  template < typename GUM_SCALAR >
  class MDDOperatorStrategy: public IOperatorStrategy< GUM_SCALAR > {
    public:
    // ###################################################################
    // ###################################################################

    MDDOperatorStrategy();

    ~MDDOperatorStrategy();

 
 
    // ###################################################################
    // ###################################################################
 
    MultiDimFunctionGraph< GUM_SCALAR, ExactTerminalNodePolicy >* getFunctionInstance() {
      return MultiDimFunctionGraph< GUM_SCALAR >::getReducedAndOrderedInstance();
    }
 
    MultiDimFunctionGraph< ArgMaxSet< GUM_SCALAR, Idx >, SetTerminalNodePolicy >*
        getArgMaxFunctionInstance() {
      return MultiDimFunctionGraph< ArgMaxSet< GUM_SCALAR, Idx >,
                                    SetTerminalNodePolicy >::getReducedAndOrderedInstance();
    }
 
    MultiDimFunctionGraph< ActionSet, SetTerminalNodePolicy >* getAggregatorInstance() {
      return MultiDimFunctionGraph< ActionSet,
                                    SetTerminalNodePolicy >::getReducedAndOrderedInstance();
    }

 
    // ###################################################################
    // ###################################################################
 
    protected:
    // ==========================================================================
    // ==========================================================================
    MultiDimFunctionGraph< GUM_SCALAR >* regress(const MultiDimFunctionGraph< GUM_SCALAR >* Vold,
                                                 Idx                       actionId,
                                                 const FMDP< GUM_SCALAR >* fmdp,
                                                 const gum::VariableSet&   elVarSeq);
 
    // ==========================================================================
    // ==========================================================================
    virtual MultiDimFunctionGraph< GUM_SCALAR >*
        maximize(const MultiDimFunctionGraph< GUM_SCALAR >* f1,
                 const MultiDimFunctionGraph< GUM_SCALAR >* f2,
                 Idx                                        del = 3);
 
    // ==========================================================================
    // ==========================================================================
    virtual MultiDimFunctionGraph< GUM_SCALAR >*
        minimize(const MultiDimFunctionGraph< GUM_SCALAR >* f1,
                 const MultiDimFunctionGraph< GUM_SCALAR >* f2,
                 Idx                                        del = 3);
 
    // ==========================================================================
    // ==========================================================================
    virtual MultiDimFunctionGraph< GUM_SCALAR >*
        multiply(const MultiDimFunctionGraph< GUM_SCALAR >* f1,
                 const MultiDimFunctionGraph< GUM_SCALAR >* f2,
                 Idx                                        del = 3);
 
    // ==========================================================================
    // ==========================================================================
    virtual MultiDimFunctionGraph< ArgMaxSet< GUM_SCALAR, Idx >, SetTerminalNodePolicy >*
        argmaximize(
            const MultiDimFunctionGraph< ArgMaxSet< GUM_SCALAR, Idx >, SetTerminalNodePolicy >* f1,
            const MultiDimFunctionGraph< ArgMaxSet< GUM_SCALAR, Idx >, SetTerminalNodePolicy >* f2,
            Idx del = 3);
 
    // ==========================================================================
    // ==========================================================================
    virtual MultiDimFunctionGraph< GUM_SCALAR >* add(const MultiDimFunctionGraph< GUM_SCALAR >* f1,
                                                     const MultiDimFunctionGraph< GUM_SCALAR >* f2,
                                                     Idx del = 1);
 
    // ==========================================================================
    // ==========================================================================
    virtual MultiDimFunctionGraph< GUM_SCALAR >*
        subtract(const MultiDimFunctionGraph< GUM_SCALAR >* f1,
                 const MultiDimFunctionGraph< GUM_SCALAR >* f2,
                 Idx                                        del = 0);
 

 
    protected:
    // ==========================================================================
    // ==========================================================================
    INLINE bool shouldEleminateVar_(const DiscreteVariable* v, const FMDP< GUM_SCALAR >* fmdp) {
      return v == nullptr ? false : fmdp->mapMainPrime().existsSecond(v);
    }
 
    // ==========================================================================
    // ==========================================================================
    INLINE const DiscreteVariable* lastVar_(const MultiDimFunctionGraph< GUM_SCALAR >* function) {
      return function->variablesSequence().size() == 0
               ? nullptr
               : function->variablesSequence().atPos(function->variablesSequence().size() - 1);
    }
  };
} /* namespace gum */
 
#include <agrum/FMDP/planning/mddOperatorStrategy_tpl.h>
 
#endif   // GUM_MDD_OPERATOR_STRATEGY_H